How to Customise the Ribbon in Outlook

We have the CRM Outlook Client.

I'd like to customise the tabs in the ribbon so that users can quickly create a Campaign Response.

I explored adding all the buttons in the Ribbon available for Campaign Response (All Commands), there were many and all appeared greyed-out in Outlook.

Any pointers to get this working? I'd basically like a link create a Campaign Response in the Home tab of Outlook.